CBSE - Aptitude Mathematics

Ranjit lent to Sujit Rs. 600 far 2 years and Rs. 150 to Alak far 4 years and received fram bath Rs. 90 as total interest.Interest being simple, the rate ,of interest charged per annum was - 1) 12% 2) 6% 3) 5% 4) 2%

A travels from B to C a distance of 250 miles in 5.5 hours. He returns to B in 4 hours 40 minutes. His average speed is 1. 44 2. 46 3. 48 4. 50

The C.I. on a certain sum of money is Rs.4080 and the S.I. is 4000. If the time, involved is 2 years, find the rate % p.a. 1. 3 1/3% 2. 6 1/4% 3. 4% 4. none of these

If 25 men can unload a truck in 1 hour and 30 minutes, how long should it take 15 men to unload the truck? 1. 2 hours 2. 2 1/4 hours 3. 2 1/3 hours 4. 2 1/2 hours